Christmas Tree Crossword Puzzle #2

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Across
  1. 2. Average number of years to get a harvestable Christmas tree
  2. 4. Structure that regulates temperature and humidity inside to help plants grow
  3. 6. Placing a seed or seedling in the earth to grow
  4. 7. Trees produce this for people to breathe
  5. 10. The state thats the #1 producer of Christmas trees
  6. 11. A young tree raised from a seed
  7. 12. Natural environment where organism's live, grow and thrive
  8. 16. Idea that humans must interact with the environment that ensures there will be enough resources for future generations
  9. 17. The most fragrant Christmas tree
  10. 18. The most popular Christmas tree
  11. 19. Circular decoration made from greenery of a Christmas tree
Down
  1. 1. Where the seed for a tree comes from
  2. 3. Process that green plants use sunlight to synthesize foods from CO2 & O2
  3. 5. Primary source of energy for photosynthesis in green plants
  4. 8. A woody plant
  5. 9. The state that's the #2 producer of Christmas trees
  6. 13. Liquid that is essential for life
  7. 14. Chemical compound name made from oxygen and carbon
  8. 15. Process which a seed sprouts and grows
  9. 16. Upper layer of earth where the tree roots grow